JBIinc_bitcoin
日本ビットコイン産業株式会社

{ "id": "7c3f1c8ba116ce4a342ff8573b5b9b0e87001fd95aa1faec659966f5c65820d3", "pubkey": "6b859c24551792d38ab6878995370bb898c88c1673b97c23c71176f4a45abe5e", "created_at": 1780977371, "kind": 0, "tags": [ [ "alt", "User profile for JBIinc_bitcoin" ], [ "picture", "https://npub1dwzecfz4z7fd8z4ks7ye2dcthzvv3rqkwwuhcg78z9m0ffz6he0q5zjj52.blossom.band/85f5c8abc646ec4639b8b7decd5d18f0ceb028cf9c8cbbb081fd69970664e469.jpg" ], [ "client", "Amethyst" ], [ "name", "JBIinc_bitcoin" ], [ "display_name", "日本ビットコイン産業株式会社" ], [ "website", "https://jbi.co.jp" ], [ "about", "The official account of Japan Bitcoin Industry — a company dedicated to advancing the Bitcoin industry in Japan." ], [ "nip05", "_@jbi.co.jp" ], [ "banner", "https://blossom.primal.net/ffa1c314ed6a68e189008bd18d98abb88ed2f3ec882ff6a599bd3cb3ea191672.jpg" ], [ "lud16", "npub1dwzecfz4z7fd8z4ks7ye2dcthzvv3rqkwwuhcg78z9m0ffz6he0q5zjj52@npub.cash" ] ], "content": "{\"picture\":\"https://npub1dwzecfz4z7fd8z4ks7ye2dcthzvv3rqkwwuhcg78z9m0ffz6he0q5zjj52.blossom.band/85f5c8abc646ec4639b8b7decd5d18f0ceb028cf9c8cbbb081fd69970664e469.jpg\",\"name\":\"JBIinc_bitcoin\",\"display_name\":\"日本ビットコイン産業株式会社\",\"website\":\"https://jbi.co.jp\",\"about\":\"The official account of Japan Bitcoin Industry — a company dedicated to advancing the Bitcoin industry in Japan.\",\"nip05\":\"_@jbi.co.jp\",\"banner\":\"https://blossom.primal.net/ffa1c314ed6a68e189008bd18d98abb88ed2f3ec882ff6a599bd3cb3ea191672.jpg\",\"lud16\":\"npub1dwzecfz4z7fd8z4ks7ye2dcthzvv3rqkwwuhcg78z9m0ffz6he0q5zjj52@npub.cash\"}", "sig": "c23ec042a1e0b187e70bafe5fd08804babe706c629b228faa6a38644c63bd8062981f489e1e3830b21403e72026eee9f4e5e082b09144328c9f6cc9b127ef425" }

Last Notes

2026-08-12 09:33:00 UTC

An AI agent that actually goes shopping with bitcoin, now open source 🛒🤖
It's an MCP server + skill set that buys gift codes, eSIMs, and mobile top-ups over Lightning (Cashu ecash). Supports usebitcoin.jp and Bitrefill, with guardrails like per-purchase spending limits built in.
https://github.com/cachet-jp/ln-agent-poc-v2

2026-08-10 10:11:00 UTC

What excites us most about Nostr: humans and AI agents can live on the same protocol.
An agent can have its own npub, read messages, reply, and receive zaps. Only an open protocol that wasn't designed exclusively for humans makes that possible.
Internally, we're running experiments where humans and agents work together on Nostr 🤖⚡

2026-08-07 03:26:00 UTC

To everyone already using the Nostr-only 2% back program we re-announced in Japanese yesterday: thank you ⚡
Quick recap of how to earn 2% back:
1️⃣ Buy at https://usebitcoin.jp
2️⃣ DM us your order ID (NIP-17)
3️⃣ Get 2% back in bitcoin
Telling us what you used it for is optional, but it helps us decide what to build next. No sign-up, no KYC.

2026-08-06 07:35:45 UTC

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Alby で該当のトランザクション内に、時間、手数料、Payment Hash, Preimage と一緒に表示されていないでしょうか？🤔

2026-08-06 07:23:15 UTC

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DescriptionのPaid to UseBitcoin以下に記載されているOrder IDになります！

2026-08-06 07:14:35 UTC

¡Hola a todos!
Ahora mismo en https://usebitcoin.jp tenemos una campaña exclusiva para Nostr: compra algo y envíanos por DM tu ID de orden, y te devolvemos el 2% del monto de tu compra.
Sin KYC y con un pago Lightning puedes conseguir códigos como V-Preca Gift, una tarjeta prepaga que sirve para compras online y se puede vincular a Google Pay, o BitCash, con el que se compra contenido de anime y mucho más. ¡Aprovecha la ocasión!
Sin registro y sin verificación de identidad.
Para participar solo tienes que enviarnos por DM de Nostr el ID de la orden que usaste. No pedimos correo ni ningún dato extra, y participar con una cuenta desechable está perfectamente bien.
El reembolso se envía en una sola tanda, más o menos un mes después de recibir tu DM. Y si quieres contarnos "para qué lo usaste", nos encantaría saberlo.
※ No pongas tu ID de orden en respuestas públicas ni en comentarios de zap. Solo vale por DM.
※ Envía el DM desde un cliente con mensajes privados (NIP-17): Damus, Amethyst, 0xchat, etc. Los DMs del viejo NIP-04 no los podemos abrir.

2026-08-06 07:14:00 UTC

表記に一部間違いがありました！
送っていただくのは使い終わった「オーダーID」のみで問題ありません。「何に使ったか」は任意です。
#nevent1q…tv9l

2026-08-06 06:58:13 UTC

日本の皆さんこんにちは！
現在、https://usebitcoin.jp では、何かを購入して、オーダーIDと「何に使ったか」をDMで送ってくださった方に、Nostr限定で購入額の2%を還元するキャンペーン実施中です！
「ビットコインは持っているけれど、日本だと使いどころがない」方、VプリカギフトやビットキャッシュといったギフトコードがLightning決済で手に入りますのでぜひこの機会に！
登録も本人確認もなし。
応募は、NostrのDMで使い終わったオーダーIDを送るだけ。メールアドレスなど、余計なものは一切要りませんし、応募はもちろん捨てアカでも何でもOKです！
還元はDM受領からおよそ1ヶ月後にまとめて送金します。皆さんの「何に使ったか」も、良ければぜひ教えてください。
※オーダーIDは公開のリプライやzapコメントには書かないでください。DMのみ有効です。
※NostrのDMは必ずNIP-17(プライベートDM)対応クライアント(Damus / Amethyst / 0xchat など)から送ってください。旧式のNIP-04 DMは開封できません。

2026-08-05 11:52:00 UTC

Once you start seeing prices in sats, there is no going back.
A cup of coffee = a few thousand sats. Even pocket-change payments don't get eaten by fees.
Micropayments never quite worked in fiat. On Lightning they are simply everyday life ⚡

2026-08-03 01:37:00 UTC

With a Nostr keypair, you can switch apps and keep your account.
Your followers, profile, and posts are tied to your keys, not to some company's server.
Social, payments, long-form blogging: one keypair does it all. The longer you use it, the more this design pays off 🔑

2026-07-31 10:46:00 UTC

Since July we've been running an experiment at https://usebitcoin.jp 🎁
Earn 2% back in bitcoin: buy something, then DM us your order ID and what you used it for. No sign-up, no KYC, throwaway accounts welcome.
Rewards are sent in a batch roughly one month after your DM. Every DM is read by a human, and what you buy shapes what we build next.
※ Please never post order IDs in public replies or zap comments. Always use a NIP-17 capable client (Damus / Amethyst / 0xchat etc.) ⚡

2026-07-29 03:18:00 UTC

Handing your credit card to an AI agent is scary. With Lightning, you can require a human to approve "pay exactly this invoice", and you set the limits and scope yourself.
For combining agent autonomy with payment safety, bitcoin is the only layer that works today ⚡🤖
New building blocks like ndebit and noffer are emerging too. Worth watching.
https://clinkme.dev/

2026-07-27 11:31:00 UTC

One more thing we love about Nostr: NIP-17 encrypted DMs 📩
Sealed, envelope-style DMs where even who is talking to whom stays hidden, available as a protocol standard.
They actually work for commercial use cases too, like receiving order details by DM.

2026-07-25 02:53:00 UTC

Using UseBitcoin takes 3 steps.
1️⃣ Pick a product at https://usebitcoin.jp
2️⃣ Pay the Lightning invoice
3️⃣ Receive your code
If you have a wallet ready, it takes about a minute. First time? Start small with a gift code ⚡

2026-07-24 06:20:25 UTC

Has anyone had a bitcoin debit card that just works? Every story I hear goes the same way: the card ships, the top-up works, and then it gets declined at the register. Starting to think the card form factor is the problem, and the fix is converting sats into whatever prepaid system people already use in each country.
Would love to be proven wrong though 🤔

2026-07-23 08:20:59 UTC

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It's got an in-house event coming up, planned by some of us and you're always welcome to join if it sounds fun! :-)
https://npub12keygx83mdwk84guknl7h8h3gn9k4njt0deqttjl43hlnvdaywzs6lxuqu.nsite.lol/

2026-07-23 08:18:10 UTC

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Oh! Its easy and fun! :-)

2026-07-23 08:01:08 UTC

Have you tried agentic payment experience? ⚡
#nevent1q…hc82

2026-07-22 12:16:00 UTC

Lightning is more capable than most people realize.
・Settlement is instant and fees are near zero
・Tiny payments (well under a dollar) still work
・A payment completes with just an invoice and an API
That last property, machines moving money between themselves, is about to matter a lot 🤖⚡

2026-07-21 07:09:40 UTC

When you want to actually spend bitcoin where you live, what do you do? Merchant maps, gift cards, a prepaid Visa that gets declined half the time?
Just wondering how people handle this in your country 🤔

2026-07-20 09:07:00 UTC

The most fun part of Nostr: zap culture ⚡
Instead of a like, sats fly straight to good posts. Signaling value becomes transferring value.
Is there anywhere else where value for value runs as everyday life instead of theory?
Even Edward Snowden mentioned the Zapathon at Nostrasia 2023. What a moment that was.

2026-07-18 03:41:00 UTC

Allow us to introduce ourselves. UseBitcoin is a Lightning-only online store 🛒
・Pay in sats over the Lightning Network
・Gift codes and prepaid cards delivered instantly (Kyash, V-Preca, DMM, au PAY and more)
・No account, no KYC
https://usebitcoin.jp

2026-07-16 10:24:00 UTC

"Bitcoin is for HODLing." We get the sentiment. But money that never gets used never becomes an economy.
The more sats circulate, spent and earned in a circular economy, the stronger bitcoin gets.
Growing the "spend" side of bitcoin is the piece Japan is missing most 🔁⚡

2026-07-16 10:15:55 UTC

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That makes sense! What about using disposable npub/nsec?
There are many clients that support multiple accounts :-)

2026-07-16 09:47:20 UTC

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If you like WoS, you can also try cashu.me and Blockstream wallet. So easy to use and modern UI, depending on how much you wanna stack though :-)

2026-07-16 09:44:44 UTC

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We know! Both wallets are simple and smooth right? Lexe is also simple, smooth, and modern, probably its worth a try!

2026-07-16 09:42:26 UTC

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Nice! Compared to cashu.me, which do you feel is better regarding UX?

2026-07-16 07:06:54 UTC

#UseBitcoin ⚡
#nevent1q…42n6

2026-07-15 14:11:30 UTC

Which one's your favorite? :-)
https://npub1dwzecfz4z7fd8z4ks7ye2dcthzvv3rqkwwuhcg78z9m0ffz6he0q5zjj52.blossom.band/d6f53fdbb71afdfde155ec9a29b5ed923a219fe7e40c5e3603ce89cd9b7418c6.jpg

2026-07-14 01:12:00 UTC

We're going all in on Nostr ⚡
This is a censorship-resistant protocol where people who use bitcoin in daily life gather from all over the world. Rather than running ads, we'd rather talk directly with people who share our values. That's why we're here.
Nice to meet you all 🙏

2026-07-13 02:06:35 UTC

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Thanks for the feedback, robdev!
Probably it takes some time for Amethyst to fetch DM relays in general? (looks like it's set up properly in our end 👀)
https://npub1dwzecfz4z7fd8z4ks7ye2dcthzvv3rqkwwuhcg78z9m0ffz6he0q5zjj52.blossom.band/83e17cab8aabe2d389fea2721adb77f40ee8195a4cb8799dcbe5b89a224807b5.jpg

2026-07-09 13:11:27 UTC

"Where can I spend bitcoin in Japan?" We see this question on Nostr every week.
Honest answer: you don't need to find a shop that accepts BTC. You can turn bitcoins into Japanese gift codes (au PAY, DMM, BitCash, QUO…) in about a minute.
No account, no KYC, no bank. Just a Lightning invoice. That's what we built usebitcoin.jp for.
Starting today we're running an experiment. Buy anything, DM us your order ID and what you used it for, and we'll zap 2% back in bitcoins.
Payouts go out in a batch, roughly one month after we receive your DM.
Every DM gets read by a human and your use case can decide what we build next.🚀🚀🚀
⚠️ DM only, please and use **private DMs (NIP-17)**; Damus, Amethyst, 0xchat all support them. Legacy DMs (NIP-04) leak who-messaged-whom and are easier to attack, so we can't read or reply to those. And don't put your order ID in a public zap comment — everything on Nostr is public, including zap notes.
#usebitcoin #JBI #nichibi

2026-07-03 03:41:31 UTC

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In Japan, sales received in bitcoin are treated the same as sales received in foreign currency and you just record the JPY value at the time of receipt as revenue. Nothing special needed on the merchant side :-)

2026-07-01 10:26:38 UTC

Real-world Bitcoin inbound-payment experiment from Japan 🇯🇵
A guesthouse in Shiga just put up a poster offering CashApp → Bitcoin payments for food & drinks on-site — aimed at foreign guests.👀
Source (JP): https://x.com/icchinakka/status/2072244225509667012

2026-06-24 04:36:26 UTC

This one aged well 😌
Finally you can buy a BitCash code with Lightning through our sites https://usebitcoin.jp, then spend it on DLsite. No account, no card, no KYC🚀
And the other day, we open-sourced an agent skill & MCP that runs the whole flow too, if you would like⚡: github.com/cachet-jp/ln-agent-poc-v2
#nevent1q…kd4n

2026-06-23 02:23:26 UTC

It's officially live!🚀
Just open-sourced an MCP agent that buys real-world gift cards, eSIMs & mobile top-ups with Cashu ecash over Lightning. ⚡
No LN node. No signup — a shared key ships in the repo, so you git clone and buy in ~2 min.
Supports UseBitcoin & Bitrefill⚡
MIT. https://github.com/cachet-jp/ln-agent-poc-v2
#Nostr #Bitcoin #Lightning #Cashu #ecash

2026-06-09 04:13:57 UTC

Finally got it done — we're now NIP-05 verified on Nostr, and our Lightning Address is live!
Zap us⚡
#nevent1q…kfn4

2026-06-04 05:23:39 UTC

Speaking of privacy in Japan, Atsuko Muraki, a Japanese government official, spent 164 days jailed for a fraud she didn't commit — a case built on evidence a prosecutor literally falsified (he altered a floppy disk's timestamp). She was cleared only because a journalist caught the tampering.
~99% conviction rate. "Hostage justice." The death penalty. In a system like that, your testimony can be turned into your crime.
Silence is a right. Privacy is a weapon to protect yourself. This is why we build.
#privacy #freedomtech #nostr
#nevent1q…93gj

2026-06-01 07:40:22 UTC

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Thank you for your inquiry.
Will be replied soon🚀

2026-05-31 20:25:43 UTC

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こんにちは、inkan さん！

2026-05-31 20:25:26 UTC

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Thanks for having us! Sure thing! Looking forward to that❣️

2026-05-31 20:24:21 UTC

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Thank you Daniel! We on it🚀

2026-05-29 14:18:29 UTC

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おはようございます！！！

2026-05-29 12:44:00 UTC

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Yes! Once you get one with Bitcoin, you can use it like an ordinary pre paid card at online shop or offline merchants without KYC! (via Google Pay)

2026-05-29 12:41:21 UTC

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ありがとうございます！

2026-05-29 12:26:36 UTC

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And there's more cooking. 🛠️
We'll introduce each as it ships. Stay tuned — plenty more where that came from. 🟧
https://jbi.co.jp

2026-05-29 12:25:21 UTC

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🟧 Yap Island — learn Bitcoin by playing. (For now, its open only in Japan region)
A game that takes you from "what's a sat?" to the philosophy of sound money, one stage at a time. Set on Yap — home of the Rai stones, one of the first currencies humankind ever created.
https://yap-island.jp/

2026-05-29 12:24:36 UTC

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🟧 UseBitcoin — spend Bitcoin without an account.
Buy prepaid cards and gift codes straight out of Lightning. No KYC, no sign-up, no log. Pay an invoice, get your code. Live in Japan today.
https://usebitcoin.jp/en/

2026-05-29 12:23:59 UTC

Here's what we've actually been building — one by one. 🧵👇
Different products, one throughline: take money, payments, and knowledge back from the gatekeepers:
#nevent1q…u0nh

2026-05-29 12:12:39 UTC

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ただいま！🫂

2026-05-29 12:06:19 UTC

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What's up! :-)

2026-05-29 09:49:06 UTC

Hello Nostr world!
We're Japan Bitcoin Industry (JBI), Japan's only Bitcoin-focused company. Japan still runs on cash, KYC, and platforms that rent you your own money — so we're building the way out, from Tokyo.
We came to Nostr for the obvious reason: it's the one place built so no one can be the single point of failure. We'd rather build here, in the open, with the people who already get it — and we'd love to take it further: study sessions, builder meetups, hands-on workshops. In Tokyo or over a relay, our door is open. Come build with us.
#bitcoin #lightning #nostr #cashu #freedomtech #japan #introductions

2026-05-29 09:27:57 UTC

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Great to see Sprout out in the open — human + agent collab!
While we're here: we're Japan's only Bitcoin-focused company, and your report on Bitcoin, Lightning, and displaced businesses really moved us. Would it be OK if we took responsibility for a high-quality Japanese translation and shared it?
We've done exactly that for VOLTAGE's and River's reports — well received in Japan.
We'd love to do the same for yours. 🟧🇯🇵